AOAC OMB ERP Approval (8-17-17)

13. Cao, X.-L .; Hewitt, C.N. (1994) Build-up of artifacts on adsorbents during storage and its effect on passive sampling and gas chromatography-flame ionization detection of low concentrations of volatile organic compounds in air. Journal of Chromatography , 688 , 368-374. [53] 1995 14. Cao, X.-L .; Hewitt, C.N.; Waterhouse, K.S. (1995) Study of the responses of gas chromatography-reduction gas detector system to gaseous hydrocarbons under different conditions. Analytica Chimica Acta , 300 , 193-200. [4] 15. Cao, X.-L .; Hewitt, C.N. (1995) Gas chromatographic determination of volatile alkenes with on-column bromination and electron-capture detection. Journal of Chromatography , 690 , 187-195. [7] 16. Cao, X.-L .; Hewitt, C.N. (1995) Detection methods for the analysis of biogenic non-methane hydrocarbons in air: a review. Journal of Chromatography , 710 , 39- 50. [18] 17.Hewitt, C.N.; Cao, X.-L .; Boissard, C.; Duckham, S.C. (1995) Atmospheric VOCs from Natural Sources, Volatile Organic Compounds in the Atmosphere , Ed. RE Hester & RM Harrison, Royal Society of Chemistry, London, 1995, pp.17-36. [4] 1997 18. Cao, X.-L .; Boissard, C.; Juan, A.J.; Hewitt, C.N.; Gallagher, M. (1997) Biogenic emissions of volatile organic compounds from gorse ( Ulex Europaeus ): Diurnal emission fluxes at Kelling Heath, England. Journal of Geophysical Research , 102 , 18903-18915. [16] 1998 19.Otson, R.; Cao, X.-L . (1998) Evaluation of a small prototype passive sampler for airborne volatile organic compounds. Journal of Chromatography, 802 , 307-314. [11] 1999 20. Cao, X.-L .; Hewitt, C.N. (1999) The sampling and analysis of VOCs in the atmosphere, Reactive Hydrocarbons in the Atmosphere , Ed. C.N. Hewitt, Academic Press, pp. 119-157. [9] 2001 21.Boissard, C.; Cao X.-L .; Juan, C.-Y.; Hewitt, C.N.; Gallagher, M. (2001) Seasonal variations in VOC emission rates from gorse ( Ulex europaeus ). Atmospheric Environment , 35 (5), 917-927 . [26] 22. Cao, X.-L .; Zhu, J. (2001) Monitoring methods for airborne glymes and its application in fuel exhaust emission measurement. Chemosphere , 45 , 911-917. [4] 23.Zhu, J.; Cao, X.-L .; Beauchamp, R. (2001) Determination of 2-butoxyethanol emissions from selected consumer products and its application in assessment of inhalation exposure associated with cleaning tasks. Environment International , 26 , 589-597. [65]

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